Abstract

Chronic granulomatous disease (CGD) is an inborn error of immunity caused by inactivating genetic mutations in any one of the components of the phagocyte nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex. Phagocytic cell reactive oxygen species generation is impaired in the absence of a functional NADPH oxidase complex. As a result, patients with CGD are at high risk of developing deep-seated infections with certain bacteria and fungi. Additionally, aberrant inflammation and granuloma formation may occur in multiple organs including the bowels, with inflammatory bowel disease seen as a common inflammatory complication of CGD. Traditionally, TNF-α inhibitors are considered effective biological therapies for moderate-to-severe inflammatory bowel disease. While limited case series and reports of patients with CGD have shown improvement in fistula healing with use of TNF-α inhibitors, several patients have developed severe, even fatal, infections with CGD-related pathogens while on TNF-inhibitor therapy. In this case report, we describe an adolescent male with X-linked CGD and steroid-refractory colitis with perirectal fistula and abscesses, who was initiated on treatment with infliximab, a TNF-α inhibitor. Following his first two infliximab doses, the patient developed a Candida glabrata lymphadenitis and associated ulcerating oropharyngeal lesions, requiring hospitalization and therapy with amphotericin B for resolution. We compare our patient's case to prior reports of infliximab use in CGD-related inflammatory bowel disease.

Highlights

  • Chronic granulomatous disease (CGD) was first described in the 1950s in a series of four pediatric patients in Minnesota who were found to have a strikingly similar constellation of symptoms

  • Analysis has revealed CGD to be a diverse family of mutations in any one of the components of the phagocyte nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex

  • The reactive oxygen species (ROS) generated by NADPH oxidase mediate formation of NETs which trap extracellular microbes, and NET formation is abnormal in patients with CGD [4, 5]

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Summary

INTRODUCTION

Chronic granulomatous disease (CGD) was first described in the 1950s in a series of four pediatric patients in Minnesota who were found to have a strikingly similar constellation of symptoms. We present the case of an adolescent male with X-linked CGD and steroid-refractory colitis with perirectal fistula and abscesses, who was initiated on treatment with infliximab, a TNF-α inhibitor. Following his first two infliximab doses, the patient developed a Candida glabrata lymphadenitis, and HSV-positive and Candida-positive ulcerating oropharyngeal lesions, requiring hospitalization and therapy with amphotericin B for resolution. Repeat colonoscopy 1 year later revealed granuloma formation in the duodenum and pseudopolyps in the jejunum, and a diagnosis of CGD-related colitis was made He soon developed transsphinteric and intersphinteric anal fistulas that became repeatedly infected. The patient is exploring the treatment option of hematopoietic stem cell transplantation (HSCT) with his care team and has a matched unrelated donor identified

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